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Implement Alley Discussion Forum

Hesston haybine

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Tom K

06-21-2005 07:57:33




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I have a Hesston PT10 ser # HS32 805 , I beleive this is a later model because the hyd cyl. is on the top and the power shaft runs thru the pivot arm . On the right side on the lower roller is a drive gear that powers the header drive assembly . While cutting hay yesterday the gear came off of the end of the lower roller . The folks at the hesston dealer said that the gear is keyed to the shaft , but there is no keyway on my shaft . the face end of the shaft is galded but it appears like there are two small tabs on the outside edge of the shaft . Unfortunately the dealer did not have a replacement drive gear for me to look at . If anyone knows how this gear is suppose to attach please let me know . Thanks any help would be greatly appreciated . Tom

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Harold Hubbard

06-22-2005 05:10:49




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 Re: Hesston haybine in reply to Tom K, 06-21-2005 07:57:33  
If you are real lucky, and the machine is still in good shape you MAY have a spare sprocket hung on one of the bolts that support the guard for the reel drive. This was standard equipment when new, depending on what reel speed was required, a sprocket of more - or fewer, teeth was included.

The shaft should have a tab on the end that fits into a slot cut across the center of the hub of the sprocket. As I recall, Agco was real proud of that sprocket, somewhere around $80 four years ago. Fortunately I was able to find a spare from another machine, but I think one could be made from a standard weld on sprocket and hub, with a slot machined across it, or hacked out by hand if you are desperate enough.

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Tom K

06-22-2005 10:08:09




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 Re: Hesston haybine in reply to Harold Hubbard, 06-22-2005 05:10:49  
Yes you are right , I found the sprocket ( 12 tooth ) and it is cut to fit over square tabs on the shaft . I looks like the tabs on my shaft are sheared off but I can weld some key stock on to the shaft to mount the sprocket to . THANKS to everyone who responded ,you don't know how much help you guys have been . Thanks again Tom K



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Lee Wv

06-22-2005 04:30:04




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 Re: Hesston haybine in reply to Tom K, 06-21-2005 07:57:33  
Wait,Are you talking about the chain drive for the reel?If so the drive sprocket for that has a 5/8 bolt threaded into the end of the shaft!



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Lee Wv

06-21-2005 19:36:13




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 Re: Hesston haybine in reply to Tom K, 06-21-2005 07:57:33  
Yes it has a key!The pulley should have a keyway and the shaft,on the tapered part has a half-moon key.I am rebuilding one just like it.



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Unimog

06-21-2005 17:56:40




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 Re: Hesston haybine in reply to Tom K, 06-21-2005 07:57:33  
Tom, I have a PT-7 which is about the same only
2 feet less in width. I think the dealer is talking about a gib key which is a tapered key
with a tab or tang. Looks like a wedge and it"s
hammered in to hold it in place. The keyway is in
the gear or hub and it"s holds without a set
screw. Usually there is a keyway in the shaft and
hub. Sorry if this isn"t clear and I am probably
wrong in your case if there is no keyway on the
shaft.

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Tom K

06-22-2005 03:03:00




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 Re: Hesston haybine in reply to Unimog, 06-21-2005 17:56:40  

Thank you for the input . The end of the shaft is gald and does not appear to be tapered . I will have to look closer to see if what I have is the hub of the gear still on the shaft . I have removed the retaining collar off of the bearing for the lower roller but it appears that there is no taper as the shaft is round all the way back to the bearing .



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Lee Wv

06-22-2005 04:26:07




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 Re: Hesston haybine in reply to Tom K, 06-22-2005 03:03:00  
So I now gather that what came loose is just the pitman drive for the cutter?Was it held on with a 6 bolt flange?If so that does not have a key,just the bearing and retainer ring.Or am I on the wrong side of the machine?



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